I didn't have to but you did not have to mock my opinion. I'm sure you'll get over it just as I did. Fair is fair regardless of how bitter it tastes.
The logical fallacy you applied was an Appeal to Authority.
What you stated is 'As they are ISTP they know more because it is their type'. This is cherry picking the statement based upon authority without asking for the basis of that position.
What I did was elude to the logical reasons I believe my own argument; because MBTI is a system based upon cognitive functions. Hopefully doing so may improve everyone's understanding of the issues at hand and to deal with those in a consistent and equitable basis and perhaps I will learn something of value also.
If we change what exactly a 'cognitive function is' then we start to see odd behaviours in the system that are not consistent because of the base assumptions. 'Help I'm an ENFP but I like maths, I have Fi I shouldn't like maths' is a silly argument; although most ENFPs may dislike maths they are perfectly capable of it just like anyone else because all that cognitive functions are is a way of interfacing with the world and do not lead to individual actions, likes or dislikes. I hope you see the conundrum and my concern.
i didn't mean to mock your opinion, i was just disagreeing

i am sorry if it came off that way though, it wasn't my intention.
i also completely agree with your last paragraph.
but i do understand the logical fallacy - i did agree it's a fallacy in my last post - it's not that i don't recognize it. i understand that just because someone is a doctor or any other claimed authority position, with proof or not, does not automatically mean their medical diagnosis, or any other claim, is any more correct than another.
my point was more along the lines of you were quick to shoot down someone's opinion when they are possibly in a better position to understand the subtleties and nuances of the subject, provided they've typed themselves correctly, etc. your quick dismissal sounded presumptuous to me especially given that i didn't really agree with your points. so what i meant to address, which i suppose didn't come off clearly, was that i found it frustrating that someone gave their own account and experience of something that really is rather personal, being an introverted function, and you addressed as if it had no value or truth in it - which, if they're not an ISTP, might be true - but if they are, then it matters, because it's their personal experience of that function.
so, i guess what came off logically an "appeal to authority" fallacy was me trying to point out that opinions shouldn't be dismissed if they're pertinent, and that pertinence depends on type, hence me citing type. it wasn't just a blind "she claims she's an ISTP so she must be right."
if that makes sense
i probably ought to be more clear about my wording. i actually appreciate your pointing this out, because i probably do this more than i realize and i'm sure it gets misunderstood.